- util: image_crop no round

- construct tracker object in constructor

util.py

@@ -1,5 +1,4 @@
 import cv2
-import sys
 import numpy as np
 import imutils as im
 
@@ -34,19 +33,18 @@ def bbox_center(bbox):
 	return x, y
 
 
-def bbox_extend(bbox: cv2.typing.Rect, factor: float = 0):
+def bbox_extend(bbox: np.array, factor: float = 0):
 	we2 = bbox[2]*factor/2
 	he2 = bbox[3]*factor/2
 
 	return bbox_round((bbox[0]-we2, bbox[1]-he2, bbox[2]+2*we2, bbox[3]+2*he2))
 
 
-def image_crop(src, bbox: cv2.typing.Rect):
-	bb = bbox_round(bbox)
-	x = bb[0]
-	y = bb[1]
-	w = bb[2]
-	h = bb[3]
+def image_crop(src, bbox: np.array):
+	x = int(bbox[0])
+	y = int(bbox[1])
+	w = int(bbox[2])
+	h = int(bbox[3])
 
 	dst = src[y:y+h, x:x+w]
 	return dst